Intel

CVE-2026-10747

mq_appliance: Heap-based Buffer Overflow (CVE-2026-10747)

criticalEPSS 0.6%

Description

IBM MQ Appliance could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow in protocol message processing before authentication.

Source: cvelistv5NVD (NIST)CVE.org (MITRE)BSI WID PortalBSI CSAF

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

ibmmq_appliance
10.0.0.010.0.0.19.49.4.09.4.0.09.4.1.0

Metrics

XIEM Effective CVSS
10.0
Source: nvd-v3
EPSS percentile
45.5 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
96.54
Exploit maturity
no public PoC known
CVSS v3
10.0
EPSS score
0.6 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-09-18 16:17 UTC
CWE
CWE-122

Weakness classes (CWE)

  • CWE-122Variant

    Heap-based Buffer Overflow

    A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-09-19 04:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-10747","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technical…
  2. New CVE Received2026-09-18 16:17 UTC· psirt@us.ibm.com
    • Description: IBM MQ Appliance could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow in protocol message processing before authentication.
    • CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    • CWE: CWE-122
    • Affected: New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/10xxx/CVE-2026-10747.json">CVE-2026-10747</a>

Linked advisories